R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 1 - Manual (Page 20)

LM01 I&M MANUAL/EN/11.30.2010
20/65
This document and the information contained herein, is the exclusive property of R&M MATERIALS HANDLING, INC. and represents a non-public, confidential and proprietary trade secret
that may not be reproduced, disclosed to third parties, altered or otherwise employed in any manner whatsoever without the express written consent of R&M MATERIALS HANDLING, INC.
Copyright © (2010) R&M MATERIALS HANDLING, INC. All rights reserved.
SEE Figure 5
m
CAUTION: Make sure the motor is not running before placing tool on the nut to adjust it.
Do not touch any moving components.
m
CAUTION: The slip-clutch generates heat when slipping. ITEMS 3 & 4 absorb this heat.
When these items become too hot, clutch adjustment may be difficult due to unstable
behavior of friction surfaces. If this happens, allow brake & clutch assembly to cool before
trying to re-adjust slip-clutch.
m
CAUTION: Decreasing torque too much when adjusting slip-clutch will allow a suspended
load to free-fall when trying to lift. If this occurs, release the motion button and the brake
will engage to stop and hold the load.
5.3.2 Slip Clutch Adjustment after Installation
1. Hook a load of at least 110 percent but not more than 125 percent of nameplate capacity.
2. Remove plastic cap from inspection hole in brake cover.
3. Raise load at slow speed and fast speed to test slip clutch operation.
4. Use a wrench to turn the adjusting nut (item 9 - Figure 5) in the required direction.
5. Turn nut in required direction:
Turn nut clockwise to increase the torque.
Turn nut counterclockwise to decrease the torque.
6. Repeat steps 3 and 4 until load can be barely lifted in fast speed. The slip clutch is now adjusted.
CAUTION: DO NOT OVERHEAT. If overheated, clutch may not adjust due to instability of friction
surfaces.
7. Once adjustment is completed, install plastic cap.
8. Check function of clutch at 100 percent of nameplate-capacity while in fast speed.
NOTICE:
The slip clutch / torque limiter is a safety device to prevent overloading of the hoist. This
device is not intended for use as means to measure the weight of load being lifted.